5 votes

Trying to bleed brakes, but getting no fluid out

Is the car on the floor? Many vehicles, I'm not sure if yours does for certain, feature a brake bias apportioning valve which is essentially a "tap" which opens or closes depending on the position of ...
4 votes

2008 Grand Prix GPX

Mitchell shows original equipment plugs are ACDelco 41-962 for the 5.3, which are double platinum plugs. Plug gap is 0.040". I've never used nor sold Bosch plugs before. From talking to people, I've ...
  • 10.7k
4 votes

2006 Pontiac Grand Prix suspension problem

The alignment is the lion's share of the expense here, so why wait til the outer side goes up to redo the alignment? Ideally, he should also replace on both driver and passenger sides while he's there ...
  • 1,722
3 votes

Pontiac Grand Prix Rpm dropping to soon

I may be missing something here but this sounds very much like the normal process of an automatic gearbox shifting up through the gears while you accelerate. For engine revs to drop while roadspeed ...
  • 9,777
3 votes

My 99 Grand Prix 3.8 . The starter engages but doesn't turn the flywheel.can anyone tell me what wires go where?

If you look at the back of the starter: The main wire from the battery (and probably two others with large eyelets) go to the top post on the solenoid (the black part on the top). The main starter ...
3 votes
Accepted

2006 Grand Prix GXP V8 high mileage engine

tl dr: Move along; nothing to see here. 396,000km (246k miles) is a lot of use even for LSx engines. Unless you are getting this for free, I'd pass. There are several reasons for this. Even though ...
3 votes

1999 Grand Prix started to consumed gas

It sounds like you may have a coil pack which has gone bad on the #6 cylinder. The easy way to check this is to exchange the coil pack with one of the other two. If the problem follows the coil, then ...
3 votes

Aftermarket Head Unit (HU) on Grand Prix 2008

From what I can gather the 2005 and 2008 wiring are the same, you may want to validate further. Here is the pinout for the radio connector.
  • 32.8k
2 votes

My a/c goes in and out at random times. Help!

Make sure that there is not any Trash between your condenser and radiator. Leaves and grass will prevent it from cooling properly and thus making the pressure rise to a point where it will cut off ...
2 votes

Boiling Antifreeze

A simple cause of boiling coolant is a radiator cap that doesn't hold pressure anymore. The cooling system is designed to be under a small amount of pressure, and that pressure increases the boiling ...
  • 13.2k
1 vote

My remote key isn’t working to unlock my doors

It sounds to me like the fob contacts are giving up the ghost. If a battery replacement doesn't fix it, get a new clam shell for it. Just change out the guts (small electronic board) into the new clam ...
1 vote

Trying to bleed brakes, but getting no fluid out

Bleeding the brakes is a 2 person job. One to open and close the valve at the caliper and another stepping on the brake pedal to force the fluid out.
  • 3,862
1 vote

01 Grand Prix No Crank when it sits in the hot Sun

After diagnosis it looks like the ignition switch, when it does the no crank I can hold the key in the start position and wobble the key-lock cylinder around and it will crank, its like it does not ...
  • 7,960
1 vote

Boiling Antifreeze

Coolant boiling over usually indicates poor coolant circulation. Either your water pump is starting to fail (they usually leak a little bit when they start to fail) or your cooling system is partially ...
  • 12.1k
1 vote

1991 Pontiac Grand Prix 3.1 Liter - Alternator replacement fail

There's a 10ga fusible link on the cable from the alternator to starter. This needs to be replaced with a new cable or you can generally buy a new fusible link and crimp or solder it in place. As to ...
  • 10.7k
1 vote

Brake issues 2004 Pontiac Grand Prix

sounds like something to do with the brake hydraulics. possibly brake booster? Need to state more information like HOW & WHEN things happen... What CAR? etc. ... The noise is very odd, but MIGHT ...
1 vote

Emergency Brakes feel like they are set but are not

I have the same problem with my 06 G6. The pins in your calipers are likely seized. Try cleaning or replacing the slide pins. If that doesn't help, it's probably time for calipers.
1 vote

Coolant light is on even after topping off

Over filling it by a little won't cause an issue. However you need to bleed the system if it was low. You could have a pocket of air stuck in the motor. You can youtube how to bleed your engine ...
1 vote

Bad vibration in my car

When you accelerate a vehicle there is a weight transfer from the front to the rear. This means the front suspension will lose its loading and extend its springs. You need to have your front end ...
1 vote

1999 Grand Prix Issues

An ECU is an engine control unit. A PCM is a power train control module. They are the same thing. Automakers love alphabet soup. I would start my investigation at the coolant temperature sensor. A ...
  • 15.9k
1 vote

1999 Grand Prix Issues

Yes. Had a friend who changed motors. New motor had a slightly different cam otherwise exact same motor. He spent $4000.00 changing parts to get the car to run right. He finally gave up and sold it. ...
  • 11

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